An Overview of Wide-Angle Lens Projections
There are two primary methods of image formation in lens design. 1. Perspective projection (F-Tan Theta lenses also called Rectilinear or Orthoscopic). 2. Equidistant projection (F-Theta lenses also called Equiangular) The Perspective projection method is most often used during the design of lenses with field of view in the 40-60 degree range. This formation method […]
Mastering Spot Diagrams: Analyzing Optical System Quality | OFH
Introduction to Spot Diagrams As optical engineers, we use different tools and techniques to evaluate the performance of an optical design when simulating the system in a ray tracing program. One of those tools are spot diagrams. They may be a little bit confusing to use at first but are an excellent way to communicate […]
Understanding Opto-Mechanical Design: Examples and Definitions
Opto mechanical design overview and definitions In an opto-mechanical design we work on the positioning of optical elements such as lenses, filters, beamsplitters, reflectors, and diffractive elements in mechanical structures that will allow the optical system to perform correctly. A typical opto-mechanical design package would include: Need assistance designing a custom optic or imaging lens? […]
5 Applications of Cylindrical Lenses
Introduction When thinking of a ‘lens’, most people have the image of a spherical lens in their mind, but there are different geometries for lenses, and one of the most common is the cylindrical lens. What’s the difference between spherical and geometrical lenses? And what applications require cylindrical lenses? In this article we will discuss […]